essentia.js in node.script ?

i would like to use essentia.js from within max. searching the forum was resulting in this thread: https://cycling74.com/forums/timeout-error-in-long-n4m-process where in a code from Florian Demmer appears essentia.js i tried a bit from there, but did not get very far, except for listing the algorithm names as a proof for essentia.js is loaded. can somebody please give me a hint where to go from here? even maybe also sending audio from max? i attach the basic patch..